A must-have App ★★★★ 
A definite must-have for anyone just learning R. A simple straight to the point interface. I highly recommend it.
by: rchival, Honduras (May 28, 2013)

Amazing App for all levels of users ★★★★ 
There are hardly any R app in the store, but at least there is this one. It has wonderful overviews of concepts and very clear examples. Thank you for you continued work on what is already such a great app!
by: THE PlatterUSA (May 14, 2013)

Handy R Resource ★★★★ 
Smart and powerful app that will teach you basic R commands. Not a word is wasted. Clear, well organized, and easy to navigate. Probably the best introductory resource to R I've come across, anywhere. It beats the books. Also handy for learning elementary stats. That is, the app will help you understand which statistical method is appropriate, as well as how to run it.  
The app is regularly and freely updated with R news, job postings, and instructional videos. Not really for me, but that's good value. Looking forward to the causal modelling update & to a broader bandwidth of more advanced statistical methods, in time. For an introductory resource, though, A+!
by: Dr Bulbulia, New Zealand (February 8, 2013)

Amazing App ★★★★ 
It's a great app on IOS. Especially for statistic students, this app can teach you how to use R in a very short time. Plus, you can access to R directly on iPad through this app. This is awesome. I need no longer bring my big laptop to library lolI love this one!!!
by: Love SleepingCanada (January 8, 2013)

Great and getting better ★★★★ 
Being new to R and finding a lot of the online documentation difficult to decipher, this app breaks the info into manageable chunks in a clear and understandable way. This is the best R reference app I have used. The information is clear and concise and has helped me to get started quickly. So far it has been frequently updated which is great to see it being actively supported. Keep up the good work.
by: LOOpaAustralia (January 5, 2013)

Love this app ★★★★ 
The app comes handy when you do not know where to start. Sometimes I go to google or any written instructions on how to use R, but only R-instructor gives you the most direct answer to your questions. Totally worth it!
by: R userrrrrr, USA (December 20, 2012)

Brilliant ★★★★ 
If you are an R user or plan to use R in the future then get this app. Absolutely fantastic app and I recommend without hesitation.
by: Aslacksm, USA (December 13, 2012)

A bargain for a reference book ★★★★ 
This app is truly a bargain as a reference book. Plus, the navigational structure of an app makes it so much easier to find the information.
by: smetoxen, USA (December 11, 2012)

Brilliant quick reference and learning tool for R ★★★★ 
Terrific. I am a professional programmer, researcher and freelance statistician experienced in Statistica, spss and Sas. R is new to me. I needed a quick way to get up to speed, and tried two of the most popular introductions on the kindle store. Though pitched at beginners, I thought these might teach me what I needed without unnecessary depth.I was wrong. These books naturally put much work into scene-setting and careful build-up, which means a lot of text to wade through. And the kindle format makes rapidly moving back and forth between sections difficult. Here, paper books excel.Enter this app. Its top-down, hierarchical organization of material makes it truly easy to find your category (e.g. plotting) then drill down to the aspect you want detail about. The detail is pared down brilliantly: syntax, explanation, assumptions where relevant and examples are concises and to the point.I found answers in minutes I had not found elsewhere in hours. One warning: do follow Shidan's advice and tap the refresh/update arrow on the home screen before first use. I forgot this the first time, and wondered why some topics didn't open! Finally, for those a little new to statistics, there is useful help about the most common statistical tests, and a statistics advisor. There should be more apps like this!
by: Ronyon Onyon, New Zealand (December 1, 2012)

Excellent introduction to R ★★★★ 
[...] This is an excellent introduction to R
by: Fraser combe, UK (October 7, 2012)

Easy to use for beginners ★★★★ 
Great app for beginners and intermediate R users!
by: R in NYC, USA (October 4, 2012)

Very helpful 
A very practical tool. No R user should be without it.
by: Rolf Marvin Bøe Lindgren, Norway (September 5, 2012)

Looking Good ★★★ 
Really handy reference for those times that you don't want to go searching through the mountains of textbooks/instruction manuals that detail the minutiae of the R language. Also a nice stats refresher, which is never a bad thing.
by: Throckmindy, USA (September 2, 2012)

Very helpful 
I have found this app very useful. I really like the integration of short instructional videos. The developer replies immediately to emails and is incredibly helpful. Good stuff.
by: InsectMick, USA (July 2, 2012)

Good reference ★★★★ 
I'm learning to use R and find R Instructor to be a good reference. Good descriptions of functions, stats, and code to use. Good list of additional references, and videos are also helpful. Also, the ads have been removed (thanks).
by: Woods_55, USA (July 2, 2012)

Nice app 
First R app I've seen. Very informative, helped me a lot.
by: Dogcopter, Canada (June 11, 2012)

I must say it's worth the money... pretty neat. Very helpful.
by: OhYie28, Canada (June 5, 2012)

I like this app 
I like this app! It helped me learn how to use R better..
by: Marcel755, Canada (June 5, 2012)

Great App! 
This app is really handy, I've had it for like two hours and I must have used it 10 times already. Great app! Everything is very easy to understand Great resources, especially the statistics page -- I needed those codes soo much. Thanks for this!!!
by: Stat101, Canada (June 5, 2012)

This is awesome, exactly what I needed to help me learn R.
by Echristenson, Canada (May 31, 2012)

Great R Reference 
Great app... really useful!
by Samarnie, Canada (May 31, 2012)

Best stats app out there 
Love this app! It's intuitive layout and fantastic descriptions with accompanying movies are well worth the purchase! Finally, an excellent stats app has arrived!
by ScienceNinja, Canada (May 30, 2012)